Update tsx example

[GeoffreyBooth]

Description

This updates the tsx example to remove the mention of --loader, which is an undocumented experimental flag that was created by accident and will likely go away in the future, as the warning states when you use it. The stable, documented, recommended approach is to use --import instead. See https://github.com/nodejs/node/issues/51196#issuecomment-2089130867.

ts-node doesn’t (directly) support --import, so I’m leaving its example as just npx ts-node; there are multiple open issues on their repo asking them to update. I updated the tsx example to be more user-focused and to use tsx as the example of registering module hooks via --import.

Validation

https://nodejs-org-git-fork-geoffreybooth-remove-loader-openjs.vercel.app/en/learn/getting-started/nodejs-with-typescript#running-typescript-code-with-tsx

Related Issues

Resolves https://github.com/nodejs/node/issues/51196

Check List

• [x] I have read the Contributing Guidelines and made commit messages that follow the guideline.
• [x] I have run npm run format to ensure the code follows the style guide.
• [x] I have run npm run test to check if all tests are passing.
• [x] I have run npx turbo build to check if the website builds without errors.
• [x] I’ve covered new added functionality with unit tests if necessary.

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[AugustinMauroy]

Another point I'm not a fan of is that only one loader (tsx) is featured, whereas before there were several that worked very well. I think tsx could be the example, but we need to come up with other alternatives.

[GeoffreyBooth]

Another point I’m not a fan of is that only one loader (tsx) is featured, whereas before there were several that worked very well. I think tsx could be the example, but we need to come up with other alternatives.

Previously it listed ts-node, tsx and “nodejs-loaders“. We still discuss the first two; the third didn’t get a description or link. Assuming it’s https://www.npmjs.com/package/nodejs-loaders, this is a package with 3 weekly downloads and it’s not specific to TypeScript.

Also this page isn’t about demonstrating how loaders work; the loaders docs do that. The purpose here is to explain to people how to use TypeScript.

[AugustinMauroy]

I agree with you that nodejs-loaders is not a very good example. But it's also important to avoid the learn putting too much emphasis on a package, because we need to keep in mind that we have a certain status.

[GeoffreyBooth]

But it’s also important to avoid the learn putting too much emphasis on a package, because we need to keep in mind that we have a certain status.

I’m not sure what this means or what you’re asking me to change to resolve this note. The current page already emphasizes ts-node and tsx pretty strongly, and that remains in this PR. Maybe that should change, but the purpose of this PR is just to update the tsx example to remove the outdated reference to --loader. I agree that there could be other general improvements to this page, but perhaps those can come as follow-ups?

[github-actions[bot]]

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[github-actions[bot]]

Unit Test Coverage Report

Lines	Statements	Branches	Functions
	90.67% (593/654)	76.08% (175/230)	94.57% (122/129)

Unit Test Report

Tests	Skipped	Failures	Errors	Time
131	0 :zzz:	0 :x:	0 :fire:	5.888s :stopwatch:

[AugustinMauroy]

but perhaps those can come as follow-ups?

Yeah sure